package org.footballmanager.pandafootball.common.configure;

import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.ChannelAwareMessageListener;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;

/**
 * Qmqp Rabbitmq
 * http://docs.spring.io/spring-amqp/docs/1.4.5.RELEASE/reference/html/
 * 
 * @author chenjian
 * @since 2015年11月01日 下午2:05:37
 */
@Configuration
public class AmqpConfig {
	public static final String EXCHANGE = "spring-boot-exchange";
	public static final String ROUTINGKEY = "spring-boot-routingKey";

	@Value("${spring.rabbitmq.host}")
	private String host;

	@Value("${spring.rabbitmq.port}")
	private int port;
	
	@Value("${spring.rabbitmq.username}")
	private String username;

	@Value("${spring.rabbitmq.password}")
	private String password;

	/**
	 * 创建工厂
	 * @return 返回值
	 */
	@Bean
	public ConnectionFactory connectionFactory() {
		CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
		connectionFactory.setAddresses(host + ":" + port);
		connectionFactory.setUsername(username);
		connectionFactory.setPassword(password);
		connectionFactory.setVirtualHost("/");
		connectionFactory.setPublisherConfirms(true); //必须要设置
		return connectionFactory;
	}

	/**
	 * 生成实例
	 * @return
	 */
	@Bean
	@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
	//必须是prototype类型
	public RabbitTemplate rabbitTemplate() {
		return new RabbitTemplate(connectionFactory());
	}

	/**
	 * 针对消费者配置
	 * 1. 设置交换机类型
	 * 2. 将队列绑定到交换机
	 * 
	 * 
	 * FanoutExchange: 将消息分发到所有的绑定队列，无routingkey的概念
	 * HeadersExchange ：通过添加属性key-value匹配
	 * DirectExchange:按照routingkey分发到指定队列
	 * TopicExchange:多关键字匹配
	 * @return 返回值
	 */
	@Bean
	public DirectExchange defaultExchange() {
		return new DirectExchange(EXCHANGE);
	}

	/**
	 * 创建队列
	 * @return 返回值
	 */
	@Bean
	public Queue queue() {
		return new Queue("spring-boot-queue", true); //队列持久
	}

	/**
	 * 检查
	 * @return 返回值
	 */
	@Bean
	public Binding binding() {
		return BindingBuilder.bind(queue()).to(defaultExchange()).with(AmqpConfig.ROUTINGKEY);
	}

	/**
	 * 消息确认
	 * @return 返回值
	 */
	@Bean
	public SimpleMessageListenerContainer messageContainer() {
		SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(connectionFactory());
		container.setQueues(queue());
		container.setExposeListenerChannel(true);
		container.setMaxConcurrentConsumers(1);
		container.setConcurrentConsumers(1);
		container.setAcknowledgeMode(AcknowledgeMode.MANUAL); //设置确认模式手工确认
		container.setMessageListener(new ChannelAwareMessageListener() {

			@Override
			public void onMessage(Message message, Channel channel) throws Exception {
			channel.basicAck(message.getMessageProperties().getDeliveryTag(), false); //确认消息成功消费
			}
		});
		return container;
	}

}
